Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of operating a client device, the method comprising: receiving, at one or more processors in a client device via a user interface, an instruction to display map data at a given zoom level; transmitting, by the one or more processors, a message requesting map data to a server via a communication network; receiving, at the one or more processors from the server, map data including map vector data for map features and label data including label text; receiving, at the one or more processors from the server, first label style information, a first range of zoom levels, and instructions to apply the first label style information to the label text at the first range of zoom levels, wherein the first range of zoom levels includes the given zoom level, and wherein style information includes at least one of: a font type, a font size, or a font color; displaying, by the one or more processors, the map vector data and the label text from the selected label data using the first label style information for the given zoom level in accordance with the instructions for the first range of zoom levels, receiving, at the one or more processors, via the user interface, an instruction to display the map data at a second zoom level within the first range of zoom levels, displaying, by the one or more processors, the map vector data and the label text from the selected label data using the first label style information for the second zoom level in accordance with the instructions for the first range of zoom levels, receiving, at the one or more processors via the user interface, an instruction to display the map data at a third zoom level outside of the first range of zoom levels, receiving, at the one or more processors from the server, second label style information, a second range of zoom levels, and instructions to apply the second label style information to the label text at the second range of zoom levels, wherein the second range of zoom levels includes the third zoom level, and wherein the second label style information is different from the first label style information, displaying, by the one or more processors, the map vector data and the label text from the selected label data using the second label style information for the third zoom level in accordance with the instructions for the second range of zoom levels, receiving, at the one or more processors, via the user interface, an instruction to display the map data at a fourth zoom level within the second range of zoom levels, and displaying, by the one or more processors, the map vector data and the label text from the selected label data using the second label style information for the fourth zoom level in accordance with the instructions for the second range of zoom levels.
A client device displays map data at different zoom levels using zoom-level-specific label styles. The device sends a request to a server for map data at a given zoom level. The server responds with map features, label text, and style information (font, size, color) for a range of zoom levels including the given zoom level. The device displays the map and labels using the received style. When the zoom level changes within that original range, the client continues to display the map and labels using the same style. If the user zooms to a level outside the original range, the device requests a new style for a new zoom level range, and renders the map and labels using the new style information.
2. The method of claim 1 , wherein receiving the label data comprises receiving, at the one or more processors, a plurality of label data, each of the plurality of label data covering a separate range of zoom levels.
The method of operating a client device as described above includes the client device receiving multiple sets of label data from the server, where each label dataset is specific to a different range of zoom levels. The device uses the appropriate label dataset based on the current zoom level being displayed.
3. The method of claim 1 , further comprising requesting, by the one or more processors, the second label style information from the server when the third zoom level is outside the first range of zoom levels and the second label style information is not available at the client device.
The method of operating a client device as described above, where the client requests a new label style for a zoom level outside the current range, involves the client explicitly requesting that new style information from the server only when the client does not already have the appropriate label style information stored locally.
4. The method of claim 1 , wherein each map feature comprises a rank specifying a relative order in which to add label text until a threshold of label text is displayed.
The method of operating a client device as described above, where the server sends map data with label text to the client device, the server also includes a relative ranking for each map feature. This ranking specifies the order in which labels should be displayed on the client device, allowing less important labels to be omitted if too many labels are displayed on the map.
5. The method of claim 1 , wherein transmitting the message requesting map data includes transmitting, by the one or more processors, an identifier for a mapping application associated with the message; and wherein receiving the label data includes receiving, at the one or more processors, label data applicable only to features supported by the mapping application.
The method of operating a client device as described above, involves the client device sending an identifier for the specific mapping application in use to the server along with the map data request. The server responds with label data that is only applicable to map features supported by that specific mapping application.
6. The method of claim 1 , further comprising: generating, by the one or more processors, a data structure including for each of a plurality of label references, a set of label data including label text, label style information, and a range of zoom levels, wherein each label reference is associated with a map feature having a geographic feature type, including determining the label style information and the range of zoom levels from the type table according to the geographic feature type for the map feature associated with the label reference; wherein the label data corresponding to the map data request is generated by obtaining a label reference associated with the map feature included in the map data request and retrieving the label data from the data structure using the label reference.
The method of operating a client device as described above includes the server creating a data structure containing label references. Each label reference points to a set of label data, which includes the label text, style information (font, size, color), and a range of zoom levels. The label style and zoom range are determined from a type table based on the geographic feature type associated with the map feature. When the server receives a map data request, it retrieves the appropriate label reference associated with each map feature and then uses the label reference to get the label data from the data structure for transmission to the client.
7. A computing device comprising: a communication interface; a user interface; one or more processors coupled to the communication interface and the user interface; and a non-transitory computer-readable memory coupled to the one or more processors and storing thereon instructions that, when executed by the one or more processors, cause the computing device to: receive, via the user interface, an instruction to display map data at a given zoom level, transmit a message requesting map data to a server via the communication interface, receive, from the server, map data including map vector data for map features and label data including label text, receive, from the server, first label style information, a first range of zoom levels, and instructions to apply the first label style information to the label text at the first range of zoom levels, wherein the first range of zoom levels includes the given zoom level, and wherein style information includes at least one of: a font type, a font size, or a font color, display the map vector data and the label text from the selected label data using the first label style information for the given zoom level in accordance with the instructions for the first range of zoom levels, receive, via the user interface, an instruction to display the map data at a second zoom level within the first range of zoom levels, display the map vector data and the label text from the selected label data using the first label style information for the second zoom level in accordance with the instructions for the first range of zoom levels, receive, via the user interface, an instruction to display the map data at a third zoom level outside of the first range of zoom levels, receive, from the server, second label style information, a second range of zoom levels, and instructions to apply the second label style information to the label text at the second range of zoom levels, wherein the second range of zoom levels includes the third zoom level, and wherein the second label style information is different from the first label style information, display the map vector data and the label text from the selected label data using the second label style information for the third zoom level in accordance with the instructions for the second range of zoom levels, receive via the user interface, an instruction to display the map data at a fourth zoom level within the second range of zoom levels, and display the map vector data and the label text from the selected label data using the second label style information for the fourth zoom level in accordance with the instructions for the second range of zoom levels.
A computing device displays map data at different zoom levels using zoom-level-specific label styles. The device sends a request to a server for map data at a given zoom level. The server responds with map features, label text, and style information (font, size, color) for a range of zoom levels including the given zoom level. The device displays the map and labels using the received style. When the zoom level changes within that original range, the client continues to display the map and labels using the same style. If the user zooms to a level outside the original range, the device requests a new style for a new zoom level range, and renders the map and labels using the new style information.
8. A non-transitory computer-readable medium storing instructions for displaying map label data across a range of zoom levels that, when executed by one or more processors in a client device, cause the client device to: receive, via a user interface on the client device, an instruction to display map data at a given zoom level, transmit a message requesting map data to a server via the communication interface, receive, from the server, map data including map vector data for map features and label data including label text, receive, from the server, first label style information, a first range of zoom levels, and instructions to apply the first label style information to the label text at the first range of zoom levels, wherein the first range of zoom levels includes the given zoom level, and wherein style information includes at least one of: a font type, a font size, or a font color, display the map vector data and the label text from the selected label data using the first label style information for the given zoom level in accordance with the instructions for the first range of zoom levels, receive, via the user interface, an instruction to display the map data at a second zoom level within the first range of zoom levels, display the map vector data and the label text from the selected label data using the first label style information for the second zoom level in accordance with the instructions for the first range of zoom levels, receive, via the user interface, an instruction to display the map data at a third zoom level outside of the first range of zoom levels, receive, from the server, second label style information, a second range of zoom levels, and instructions to apply the second label style information to the label text at the second range of zoom levels, wherein the second range of zoom levels includes the third zoom level, and wherein the second label style information is different from the first label style information, display the map vector data and the label text from the selected label data using the second label style information for the third zoom level in accordance with the instructions for the second range of zoom levels, receive, via the user interface, an instruction to display the map data at a fourth zoom level within the second range of zoom levels, and display the map vector data and the label text from the selected label data using the second label style information for the fourth zoom level in accordance with the instructions for the second range of zoom levels.
A non-transitory computer-readable medium stores instructions that, when executed, cause a client device to display map data at different zoom levels using zoom-level-specific label styles. The device sends a request to a server for map data at a given zoom level. The server responds with map features, label text, and style information (font, size, color) for a range of zoom levels including the given zoom level. The device displays the map and labels using the received style. When the zoom level changes within that original range, the client continues to display the map and labels using the same style. If the user zooms to a level outside the original range, the device requests a new style for a new zoom level range, and renders the map and labels using the new style information.
9. The computer-readable medium of claim 8 , wherein the label data includes a plurality of label data, each of the plurality of label data covering a separate range of zoom levels.
The computer-readable medium as described above contains instructions to receive multiple sets of label data from the server, where each label dataset is specific to a different range of zoom levels. The device uses the appropriate label dataset based on the current zoom level being displayed.
10. The computer-readable medium of claim 8 , wherein the instructions further cause the client device to request the second label style information from the server when the third zoom level is outside the first range of zoom levels and the second label style information is not available at the client device.
The computer-readable medium as described above, where the client requests a new label style for a zoom level outside the current range, involves the client explicitly requesting that new style information from the server only when the client does not already have the appropriate label style information stored locally.
11. The computer-readable medium of claim 8 , wherein each map feature comprises a rank specifying a relative order in which to add label text until a threshold of label text is displayed.
The computer-readable medium as described above, where the server sends map data with label text to the client device, the server also includes a relative ranking for each map feature. This ranking specifies the order in which labels should be displayed on the client device, allowing less important labels to be omitted if too many labels are displayed on the map.
12. The computer-readable medium of claim 8 , wherein to transmit the message requesting the map data, the instructions cause the client device to transmit an identifier for a mapping application associated with the message and the label data includes label data applicable only to features supported by the mapping application.
The computer-readable medium as described above involves the client device sending an identifier for the specific mapping application in use to the server along with the map data request. The server responds with label data that is only applicable to map features supported by that specific mapping application.
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November 7, 2017
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